2,3-DIHYDRO-2',3'-EPOXY-8-METHOXYSPIRO[4H-1-BENZOPYRAN-4,1'-CYCLOHEXANE]

被引：1
|
作者：
RODIER, N [1 ]
ZHANG, YM [1 ]
MAYRARGUE, J [1 ]
机构：
[1] FAC SCI PHARMACEUT & BIOL CHATENAY MALABRY,CHIM ORGAN LAB,F-92296 CHATENAY MALABRY,FRANCE
来源：
ACTA CRYSTALLOGRAPHICA SECTION C-CRYSTAL STRUCTURE COMMUNICATIONS | 1992年 / 48卷
关键词：
D O I：
10.1107/S0108270191011605
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
2,3-Dihydro-2',3'-epoxy-8-methoxyspiro[4H-1-benzopyran-4,1'-cyclohexane], C15H18O3, M(r) = 246.3, orthorhombic, Pbcn, a = 26.085(7), b = 7.211 (2), c = 13.653 (6) angstrom, V = 2568 (3) angstrom3, Z = 8, D(x) = 1.274 Mg m-3, lambda(Cu K-alphaBAR) = 1.5418 angstrom, mu = 0.67 mm-1, F(000) = 1056, T = 295 K, R = 0.048 for 1273 unique reflections. Both six-membered rings which share the spiro C atom are approximately 1,2-diplanar (sofa conformation) while the aromatic ring is planar. Owing to steric hindrance, one C-C bond formed by the spiro C atom is slightly longer than usual [1.560 (5) angstrom], but one of its neighbours in the heterocycle measures only 1.452 (5) angstrom. The structure can be regarded as constituted of layers of molecules which spread out approximately along the planes x = +/- 1/8 and +/- 3/8.
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收藏
页码：885 / 887
页数：3
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